Choose total number of correct statements about `H_(2)O_(2)` :
(a) in the pure state, `H_(2)O_(2)` is almost colourless (very pale blue)
(b) hydrogen peroxide has non-planar structure in both gas phase and solid phase
(c) 2-ethylanthraquinol react with water to give `H_(2)O_(2)`
(d) `H_(2)O_(2)` is used in pollution control
(e) dihedral angle of `H_(2)O_(2)` is larder in gas phase compared to that in solid phase
